31200461121 has 16 divisors (see below), whose sum is σ = 42184238720. Its totient is φ = 20508681600.

The previous prime is 31200461119. The next prime is 31200461141. The reversal of 31200461121 is 12116400213.

It is not a de Polignac number, because 31200461121 - 2¹ = 31200461119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31200461141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701340 + ... + 744498.

It is an arithmetic number, because the mean of its divisors is an integer number (2636514920).

Almost surely, 2^31200461121 is an apocalyptic number.

It is an amenable number.

31200461121 is a deficient number, since it is larger than the sum of its proper divisors (10983777599).

31200461121 is a wasteful number, since it uses less digits than its factorization.

31200461121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46536.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31200461121 its reverse (12116400213), we get a palindrome (43316861334).

The spelling of 31200461121 in words is "thirty-one billion, two hundred million, four hundred sixty-one thousand, one hundred twenty-one".